Streaming a part of the screen to another computer/android device

[Lord Athetos]

So i recently bought 3 new screens to replace the 4480x1080 surround setup that i had to a 6390x1080 (an ultrawide in the middle and two 16:9 at the sides) and some games dont scale very well with that resolution, so for example if the minimap doesnt remain in the middle screen and it goes to an edge is so far away that i cant see it without turning my neck, and doing that is not only distracting from the game, but it hurts my neck after a few hours. Is there any software or workaround to stream part of the screen to for example my phone or another pc. I have taken apart my old laptop and conected it to a raspberry pi screen that i have under my main monitor, so have the map there would be pretty handy. Anyone knows if is any way to do this? thanks in advance

[Ezzy-525]

Use OBS and stream the section to twitch, watch it on your device/screen of choice

 

Only downside is there will be lag